Bombs went off outside two schools in Nepal's capital on Tuesday, and unexploded bombs were found at five other schools in the city, officials said.

There were no injuries and only minor damage was reported.

The explosions happened outside the gates of two primary schools, said police official Bikram Singh Thapa. The unexploded devices found in front of five other schools in Kathmandu were either detonated or removed.

Police arrested two people suspected of being behind the blasts, Mr Thapa said.

Police found pamphlets near the blast sites and attached to the unexploded devices from a little-known group demanding free education for all Nepalese children.

Mr Thapa said that no injuries were reported, and that the explosions caused minor damage to the schools' gates.

Security and police surveillance was stepped up around schools in Kathmandu. School officials were to meet later with government education officials to discuss the attacks.

While education is mostly free in Nepal's public schools, the teachers are poorly paid and the infrastructure is substandard, leading most children in the cities to attend private schools.